MUSI 215 Lecture Notes - Lecture 4: Key Signature, Relative Key, Tertian
18 Sep 2016
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Identified quantitatively: 1 = unison, 2 = seconds, 3 = thirds, 4 = fourths, 5 = fifths, 6 = sixths, 7 = sevenths, 8 = 8ths. Also identified qualitatively: p = perfect, m = major, m = minor, a (or +) = augmented, d (or o) = diminished. Inversion number = 9: subtract the number from 9 to find the inversion, ex. Inversion of a 2nd is a 7th because 9-2 = 7. Perfect consonants are octaves, fifths, and fourths. Dissonances 2nds and 7ths (they don"t blend in harmony) Interval = distance between two notes: it"s labelled by quantity (unison, 2nd, 3rd, etc) an quality (major, minor, augmented, diminished) Parallel minors have the same starting (tonic) note as major, but a different key signature. Relative minors had a different tonic, but the same key signature. To find relative minor you can: go down 3 half steps, go up 6 scale degrees, take away 3 sharps/add 3 flats.
